diff options
| author | lidongyang <[email protected]> | 2019-02-23 04:48:37 +1100 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2019-02-22 09:48:37 -0800 |
| commit | 8d9e51c084805237a36420e6cdcd8e2e9801a7cf (patch) | |
| tree | 250c85d7ccbcf69cbb09b0ce1cddc2c188be4a68 /include/sys/zfs_context.h | |
| parent | f8bb2a7e0c889d6c5cf7655d698869b3a32c2bb0 (diff) | |
Fix dnode_hold_impl() soft lockup
Soft lockups could happen when multiple threads trying
to get zrl on the same dnode handle in order to allocate
and initialize the dnode marked as DN_SLOT_ALLOCATED.
Don't loop from beginning when we can't get zrl, otherwise
we would increase the zrl refcount and nobody can actually
lock it.
Reviewed by: Tom Caputi <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Li Dongyang <[email protected]>
Closes #8433
Diffstat (limited to 'include/sys/zfs_context.h')
| -rw-r--r-- | include/sys/zfs_context.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sys/zfs_context.h b/include/sys/zfs_context.h index 11a32bb31..260b8a458 100644 --- a/include/sys/zfs_context.h +++ b/include/sys/zfs_context.h @@ -236,6 +236,7 @@ extern kthread_t *zk_thread_create(void (*func)(void *), void *arg, #define kpreempt_disable() ((void)0) #define kpreempt_enable() ((void)0) +#define cond_resched() sched_yield() /* * Mutexes |